Breast Cancer Screening

Breast Cancer Screening

What Is Breast Cancer?

Pink Ribbon FacilityHaving breast cancer means that some cells in your breast are growing abnormally. Learning about the different types and stages of breast cancer can help you take an active role in your treatment.

Changes in Your Breast

Your entire body is made of living tissue. This tissue is made up of tiny cells. You can’t see these cells with the naked eye. Normal cells reproduce (divide) in a controlled way. When you have cancer, some cells become abnormal, changing shape. These cells may divide quickly and spread into other parts of the body.

 Noninvasive breast cancer in the ducts  
Learn more about breast cancer

Stages of Breast Cancer 

Several tests are used to measure the size of a tumor and learn how far it has spread. This is called staging. The stage of your cancer will help determine your treatment. Based on American Cancer Society guidelines, the stages of breast cancer are:
Stage 0. The cancer is noninvasive. Cancer cells are found only in the ducts (ductal carcinoma in situ).

  • Stage I. The tumor is 2 cm or less in diameter. It has invaded the surrounding breast tissue, but has not spread to the underarm lymph nodes.
  • Stage II. The tumor is larger than 2 cm or has spread to the lymph nodes under the arm.
  • Stage III. The tumor is larger than 5 cm. Or the tumor has spread to the skin, chest wall, or nearby lymph nodes.
  • Stage IV. The tumor has spread to the bones, lungs, or lymph nodes far away from the breast.

Recurrent breast cancer. When the cancer returns despite treatment.

Screening Mammogram 

A screening mammogram is an x-ray of the breast used to detect breast changes in women who have no signs of breast cancer. It usually involves two x-rays of each breast. Using a mammogram, it is possible to detect a tumor that cannot be felt.

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